Mixing valve



July 24, 192s. 1,677,995 l 1 J. H. TRI-rz MIXING VALVE Filed April 5. 192e 2 a' /Z l 7 Vautomobile cleaning *been found ideal for l0.v

*between the Patented July 24, 19,28.

UNITED ria-sv PATENT ozFfincE.

JOHN H. TRITZ, or CLINTON, IOWA, assIeNoR' fro 'coTTATRANsMIssIoN CORPORATION,

OF RO OXFORD, ILLINOIS, A

CORPORATION yor ILLINOIS.

MIXING IVALVE.

l.Application filedV April 5, .1926. S.eria1-No. y99,760.

This invention relates generally tofmixing valves -for gas and liquid contact apparatus, but isfmorel particularly concerned with a mixing valve to' be used with an extension yhose and .sprayv nozzle or gun `for spraying "kerosene or any other cleansing agent in establishments :where finelyy divided mists Vhave thoroughly ,and efficiently cleaning themotor, chassis, and general under-gear on cars.

@ne of the principal objects of. the invention is to provide a mixing valve lor the pursu'eli vapors or pose referred to embodying anovel construcl5r 1 ytween-the'air and kerosene toy produce tion for producingan intimate contact bethe kerosene vaporinla thoroughly eiiicient and practical'manner in the volumesrequired for The construction for bodymember having av tubular jet therein with a plurality of restricted openings in the walls thereof -for delivering the'kerosene under` pressurer in a. finely divided formfor discharge as a vaporl spray, the air beingy introd'uced by an air iniector nozzle loperating centrally within the jet.

The invention is more fully described here'- inafter, reference being hadto the ac'oonr panying drawing whereiny Fig. 1 is a side view ofa kerosene-vapor auto cleaning apparatus incorporating-the novel mixing valve of myl invention;

Fig. 2 is an enlarged longitudinal crosssection through the mixing valveland. its connections; and

lineV 3-3 of Fig. 2 looking in the direction of the arrows.

lvKeroseiiewapor cleaning apparatus have generally received favorable oommentyfby reason of the thoroughly etiicient vmanner 'in which the vapors cut the grease and oil and permit the easy cleaning olf of -dirtwhich otherwisek could hardlybe :dislodged Afrom the motor and chassis and general undergear on automobiles. Such an apparatus of this kind kasherein illustrated essentially comprises a tank 5, portable or otherwise, to contain the kerosene or other washing solution. The tank is provided with a convenient filler cap (not shown) and also has a fitting (not shown) for the charging of a aligned open ends, providedy 3 is a transverse sectionl taken on the head space left in the tank above'tlie liquid therein, lwith compressed air to-fdischarge the'keresene and` air ointly as a vapor under va pressure in the neighborhoodof 150 or 175 pounds. ent invention, is producedby intimatecontact between the kerosene and air in la mixing valve 6 with which the'tank 5 has connection tl'iroughgvpipes 7 and 8. The pipes/7, hereinafter referred to as the air connection, has communication with the tank 5 through a control or shut-off valve9 v,While theA pipe 8, hereinafter' referred to as thef-Lkerosene or liquidv connection, f has communication with the tank through a control or vshut-ofvalve 1()` and ,T-coniiection 11, the latter ihaving a suitable drain pluglQc by meansof which the contents of the. tank maybe .drained vrwhen the occasion arises. The mixing `valve 6 dischargesv into an` extension hose13. terminating in a spraynozzle or gun114 vof a lengt-h affording convenient accessy to all points under and about tlie-vcar,l and provided with` a jet` tip 115 of anysuitable or preferred form. The nozzle 14 is Valso equipped -wvith va handr Control valve 16 operated by hand pressure on the lever 17V to depress a springvpressed plunger 18 in the valve 16 in lan obviousmanner. Thev mixing valve 6, by reason of its novel construction,l has been found to be capable yof producing a` vapor' of the desired consistency and in the volumes required for the Work intended. The .details thereof rvfully described.

The mixing valve v6. comprises a .hollow T-shapedxbodymember. 20 having a pair of aligned end openingsQl and 22' and an inter- V-iii'ediate side opening 23, the latter being directly connectedwith the pipe 8, yabove re-' lferred to. A hollow tubular jet element'Q is mounted within. the body 20 extending lengthwise between the aligned open ends thereof as shown, Ywith the discharge portion 2G thereof extending from the bodyQ() for' will now be y the jet to be compressed into sealing contact between the members when the jet is threaded into place. The other end ot the jet 25 has an annularrim 3l provided thereon litt-ing closely within the smooth open end 22 ot the body 20. i packing ring 32 encircles the discharge portion 26 in trent ot the rim 3l and is arranged to be compressed into sealing engagement in the end ot the body 2O by a gland nut 33 which threads on the externally threaded portion 34 at the inner end ot the discharge portion 26 of the jet 25. A compression ot t-herpackings and 32 avoids any likelihood ot leakage ot kerosene under pressure from within the body 20. The intermediate tubular portion 35 of the jet 25 is provided with a plurality ot restricted jet openings 3G arranged in staggered relationship, as indicated, and eX- tending substantially radially relative to the bore 37 ol the The liquid, in this case kerosene, is delivered into the iet 25 under pressure through the openings in a linely divided term thereby facilitating intimate contact with the air -lor obvious reasons.

The bore 87 ot the jet 25 tapers, as indicated at 38, toward the restricted discharge bore 89 extending through the discharge porshown.

tion 26 ot the jet 25. An air injector nozzle 40 operates within the jet 25 and is centrally arranged relative thereto. lt has an enlarged base portion ll which is externally threaded tor reception in the internally threaded open end 42 ot the jet 25. The air connection 7, above referred to, threads directly into the base ll ot the nozzle l0 as "he nozzle /lO extends lengthwise with respect to the jet 25 toward the discharge bore 39 and has the bore thereof restricted at its discharge end sbl; adjacent the tapered portion 38 ofthe bore ot the 'libe resulting arrangeinei'it produces an injector action. The air entering the nozzle l() under pressure discharges through the bore 39 with an exceedingly high velocity by reason olI the restriction ot the discharge end 44. The area of all the jet openii'igs 3G docs not aggregate the area ot the discharge bore 39 so that the finely divided liquid particles are drawn forwardly with the air discharged from the nozzle 40 by an injector action. The finely divided condition of the liquid results in ideal intimate contact between the liquid and air and a line vapor or mist is produced discharged under pressure from the nozzle ll. The combined cutting action of the kerosene on the grease and oil withthe accompanying pressure readily dislodges any mud andv dirt that may be caked on ,the under-gear, chassis or motor, leaving the surface thoroughly clean. 1

.lt'is believed that the foregoing conveys a clear understanding ol1 the objects pretaced above, and while I have illustra-ted but a single working embodiment, it should be understood that changes might be made in details ol construction without departing from the spirit and scope of the invention as expressed in the appended claim.

l claim: l

A spray fitting tor the purpose described, comprising a hollow T-shaped body member having a pair 'of aligned end openings and an intermediate side opening, a hollow tubular jet element extending through said body member between the aligned open ends thereof, having the intermediate portion thereotl spaced from the inside walls of said body member, there being a plurality of restricted openings provided inthe wall of the jet element in said intermediate portion, the ends ot said jet element serving to close the aligned end openings of the body member, at least one ot said ends being externally threaded and the corresponding .end ot said body member being internally threaded for threaded reception thereof whereby the jet element is arranged to be threaded tightly in place in the body member, the other end of said jet element being smaller than the.

bore at that end of the body member and being externally threaded, the said end of the bore being smooth, a packing washer on the said end of the jet element, a packing nut threading on said end and arranged when tightened to spread the washer so as to make a sealing ht in the bore, 'the tightening of the packing nut being unatl'ected by the tightening of the jet element by reason otthe arrangen'ient set forth, and vice versa, an

air injector nozzle mounted in the rearward end of saidv jet element and extending centrally therein toward the opposite end thereof in spaced relation to the inside walls o't said jet element, means for supplying air under pressure to said injector, means tor supplying liquidnnder pressure to the intermediate side opening ot the body member for discharge into the jet element through the krestricted openings in the walls thereof, and

means communicating with the forward end oi said jet element for conducting a spray discharged from said litting resulting from the action oit the air with the liquid;

In witness of the foregoing l aliiX mysignature.

JOHN H. TRITZ. 

